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EP0372225A2 - Mouton de forage - Google Patents

Mouton de forage Download PDF

Info

Publication number
EP0372225A2
EP0372225A2 EP89120336A EP89120336A EP0372225A2 EP 0372225 A2 EP0372225 A2 EP 0372225A2 EP 89120336 A EP89120336 A EP 89120336A EP 89120336 A EP89120336 A EP 89120336A EP 0372225 A2 EP0372225 A2 EP 0372225A2
Authority
EP
European Patent Office
Prior art keywords
chisel
housing
boring machine
tip
ram boring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89120336A
Other languages
German (de)
English (en)
Other versions
EP0372225B1 (fr
EP0372225A3 (fr
Inventor
Alfons Dipl.-Ing. Hesse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tracto Technik GmbH and Co KG
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0372225A2 publication Critical patent/EP0372225A2/fr
Publication of EP0372225A3 publication Critical patent/EP0372225A3/fr
Application granted granted Critical
Publication of EP0372225B1 publication Critical patent/EP0372225B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches

Definitions

  • the invention relates to a ram boring machine with a reciprocating piston and a percussion tip in a tubular housing.
  • a ram boring machine of this type is known from German Patent 21 57 295; It is primarily used to lay supply lines, such as water pipes or cables under roads or dams or other buildings and obstacles, without having to tear open the road surface or the surface of the earth at the same time. This is done in such a way that the ram boring machine which moves forward in the soil displaces the soil to the side and leaves a channel in which the supply line is drawn in simultaneously or later.
  • This known ram boring machine has a two-part housing, ie a housing tip screwed into the housing receiving the percussion piston.
  • the housing tip encloses an end which is designed as a striking tip at its front end in the working or impact direction and which has a collar and a pin at the other end, axially movable chisel, the collar being received by a bore in the housing tip.
  • the thus movable chisel offers the advantage that the impact energy of the percussion piston can initially be transferred specifically to the chisel, so that a higher shattering energy is available.
  • the pin represents the impact surface for the associated percussion piston and protrudes in the starting position before the working stroke from a ring screwed into the housing with the housing tip.
  • the ring limits the movement of the collar and thus the chisel against the working direction of the striking tip.
  • the movement of the chisel in the working direction is limited by a front stop, formed by a bore shoulder, of the bore of the housing tip receiving the collar.
  • the chisel is supported on the collar and compression springs at the top of the housing; the springs move the chisel back to its starting position after each stroke from its forward position in the direction of the housing tip.
  • ram boring machines are also known in which the housing and the housing tip are in one piece; otherwise there are no significant differences between a two-part and a one-piece device housing. All ram boring machines have in common that the stone or other obstacles which break up stones or other obstacles during the forward movement of the ram boring machine and push to the side, i.e. the path for the chisel, which knocked open, wears out considerably due to the smashing work to be carried out and must therefore be frequently replaced.
  • the invention is based, to operate a ram boring machine of the type mentioned the task improve and simplify the installation and removal or replacement of the striking tip and / or the chisel.
  • the striking tip which can also be designed as a chisel, is connected to the housing by means of a bayonet catch.
  • the invention thus makes use of the knowledge that the principle of a bayonet or bayonet connection can advantageously be used to fix a striking tip and / or a chisel in the housing of a ram boring machine.
  • the entire front housing can also be connected to the main housing in this way and secured in its installation position with a fuse.
  • a pin of the chisel is preferably provided with at least one radial shoulder segment which engages behind an inner collar of the housing having at least one axial passage adapted to the segment on the side facing away from the chisel, the chisel or chisel head can be simply plugged together axially, i.e. Insert into the device housing and then turn it radially to the housing.
  • the chisel can be locked non-rotatably in its installed position by means of an anti-rotation device, for example a pin inserted transversely through the housing; in addition, the locking pin counteracts independent loosening during operation.
  • a chisel collar consists of two diametrically opposed shoulder pieces and arranged in a housing chamber which has a front and a rear stop which limits a stroke of the chisel is.
  • the stroke of an axially movable chisel can be limited by the end walls serving as stops of the housing chamber, which may be designed as a pressure chamber.
  • the housing chamber can advantageously be arranged between two inner collars, of which at least the inner collar which is at the front in the direction of impact is provided with two diametrically opposite axial passages corresponding to the chisel collar.
  • the chisel has a much lower resistance than in hard soils, that either the chisel collar meets the front inner collar fixed to the housing or the percussion piston hits the rear inner collar fixed to the housing and that Percussion piston energy is always transferred via the large, housing-fixed inner collar.
  • the rear inner collar is then acted upon after the pin of the chisel projecting from the inner collar in the direction of the percussion piston has been displaced into a position which is at least flush with the outer surface of the inner collar.
  • a compression spring can be arranged between a support ring arranged on the chisel in a manner fixed against relative rotation, which engages behind at least one shoulder segment on the rear inner collar on the side facing away from the chisel, and a counter ring of the chisel pin. After a working stroke of the percussion piston, this always returns the chisel to its starting position, in which the chisel collar rests against the rear stop and the pin protrudes from the rear inner collar and is therefore always acted upon by the percussion piston.
  • the counter ring advantageously consists of two half shells and is arranged in a circumferential groove of the chisel pin.
  • the insertion and fastening of the counter ring in the circumferential groove allows the compression spring and the support ring to be arranged in a positionally secure manner on the chisel pin before the chisel is inserted into the housing, so that a complete chisel assembly is present.
  • a front stop for the percussion tip - this can be a chisel - can be formed in one piece with the stop surface acted upon by the percussion piston and limiting the forward stroke of the percussion piston. Because of this one-piece, i.e. Both the stop surface for the percussion piston and for the chisel or its collar is located on the same part of the device, the operation of the ram boring machine can be further improved, especially when used in soft soils.
  • the chisel is advantageously arranged in a housing tip detachably connected to the main housing, the one-piece design can be realized in a simple manner in the case of a component to be connected to the device housing in the manner of a bayonet lock.
  • a two-part housing of the ram boring machine which consists of the main housing receiving the percussion piston and the housing tip provided with the chisel.
  • This housing tip or this front housing can, for example, be screwed into the inside of the main housing or screwed in from the outside, or fixed therein in a non-positive or positive manner.
  • Both the stops for the chisel collar and the stop for the percussion piston, namely the end face of the housing tip are located on the same component or are provided by this component, the housing tip.
  • the chisel can advantageously protrude from the tip of the housing with its pin end facing the main housing and the protrusion length is not greater than the maximum stroke length of the chisel between the stops.
  • the protruding length of the chisel pin is thus less than or equal to the maximum stroke of the chisel, the operation of the ram boring machine can be improved in soft soils.
  • a percussion piston 3 which is only shown with its front end, is guided to move back and forth.
  • the percussion piston 3 receives its impact energy by supplying compressed air to the rear end of the housing 2. Since these are known measures and constructions, the representation of the rear housing part has thus been dispensed with.
  • the main housing 2 is provided at its front end in the direction of impact 4 with an internal thread 5, into which a housing tip 6 is screwed with a peg-like thread extension 7.
  • a chisel 10 formed at its front end as a striking tip 9 is guided with a pin 11 which extends through the entire housing tip 6 and projects into the working space 13 of the striking piston 3 with its pin end 12 facing the main housing 2 .
  • the projection length 14 of the pin 11 is smaller than the maximum stroke 15 of the chisel 10 in the direction of impact 4; the stroke path 15 results from the path that a chisel collar 16 could theoretically cover between a front and a rear stop 18, 19 in a housing chamber 17 which is enlarged compared to the diameter of the axial bore 8.
  • the protruding length 14 is smaller than the stroke 15, the striking piston hits the end face 20 of the housing tip 6 fully after a stroke of the chisel 10 corresponding to the protruding length 14.
  • the housing chamber 17 is delimited by inner collars 21, 22 which are fixed to the housing and which simultaneously define the stops 18, 19 with their inner surfaces.
  • the through bores 23 of the inner collars 21, 22 are smaller in diameter than the chisel collar 16 consisting of two diametrically opposed shoulder pieces 24 and a support ring 26 which is pushed onto the pin 11 of the chisel 10 and also has two diametrically opposed shoulder segments 25 (cf. FIG. 4) who sits on the chisel in a rotationally fixed manner and rests with his shoulder pieces 25 against the rear face of the rear inner collar 22 in the direction of impact 4.
  • At least one nose 35 arranged on the shoulder piece 24 serves as an anti-rotation device.
  • a compression spring 29 surrounding the pin 11 is arranged between the support ring 26 and a two-part counter ring 28 inserted into a circumferential groove 27 of the pin 11.
  • the percussion piston 3 moving in the striking direction 4 strikes the end face 20 of the pin 11 and moves the pin 11 and thus the chisel 10 forward against the force of the compression spring 29 until it hits the stop face 36 which limits its forward stroke, i.e. hits the end face of the striking tip 7 after the working stroke, the compression spring 29 returns the chisel 10 to its initial position shown in FIG. 1.
  • Seals 30, 31 inserted into grooves in the pin 11 seal the chisel 10 from the front to the ground and from the rear to the working space 13 of the percussion piston 3 and prevent the entry of dirt and ground.
  • the chisel 10 with the rings 26, 28 arranged on the pin 11 and the compression spring 29 supported against these rings and the seals 30, 31 is used as a prepared
  • the complete unit is pushed into the housing tip 6 and locked securely in position. This is achieved in that the inner collars 21, 22 are provided with axial passages 32, as shown in FIG. 2 for the front inner collar 21 and in FIG. 3 for the rear inner collar 22, which have the shape and dimensions of the shoulder pieces 24 , 25 are adjusted.
  • the shoulder pieces 24, 25 are brought into a position aligned with the axial passages 32, so that the chisel 10 can be inserted axially unimpeded. After the chisel 10 has reached its installation position shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP89120336A 1988-12-05 1989-11-03 Mouton de forage Expired - Lifetime EP0372225B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3840923 1988-12-05
DE3840923A DE3840923C2 (de) 1988-12-05 1988-12-05 Rammbohrgerät

Publications (3)

Publication Number Publication Date
EP0372225A2 true EP0372225A2 (fr) 1990-06-13
EP0372225A3 EP0372225A3 (fr) 1992-05-27
EP0372225B1 EP0372225B1 (fr) 1997-01-29

Family

ID=6368482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120336A Expired - Lifetime EP0372225B1 (fr) 1988-12-05 1989-11-03 Mouton de forage

Country Status (4)

Country Link
US (1) US5125462A (fr)
EP (1) EP0372225B1 (fr)
JP (1) JP2703374B2 (fr)
DE (2) DE3840923C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992010637A3 (fr) * 1990-12-12 1992-12-10 Dalfsen Rotar Equipment B V Va Outil servant a faire des trous dans le sol
US5797705A (en) * 1990-12-12 1998-08-25 Willibald Kellner Method for manufacturing a tubular foundation in the ground

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5465797A (en) * 1994-02-22 1995-11-14 Earth Tool Corporation Pneumatic ground piercing tool with detachable head
FI98400C (fi) * 1994-08-03 1997-06-10 Valto Ilomaeki Poralaite
JP2943081B2 (ja) * 1995-07-06 1999-08-30 株式会社小松製作所 油圧式転圧装置
US6234719B1 (en) * 1996-09-26 2001-05-22 Njal Underhaug Mobile combined drilling and piling machine and method for tubular foundation with machine
CA2194079C (fr) * 1996-12-19 2005-11-29 Murray P. Craigmile Methode et appareil pour realiser un trou de forage directionnel et mettre en place des tiges de forage
AU753171B2 (en) * 1998-07-08 2002-10-10 Tracto-Technik Paul Schmidt Spezialmaschinen Positive connection between a pipe and a ring inserted into the pipe
US6273201B1 (en) * 2000-02-16 2001-08-14 Earth Tool Company, L.L.C. Pneumatic ground piercing tool with movable chisel head
DE10146023B4 (de) * 2001-09-18 2006-02-23 Tracto-Technik Gmbh Steuerung für einen Schlagantrieb
EP1733849A1 (fr) * 2005-06-15 2006-12-20 Caterpillar, Inc. Ensemble outil avec carter en deux parties
EP1733851B1 (fr) * 2005-06-15 2013-01-02 Caterpillar Inc. Appareil et procédé de retenue d'outil

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1566630A (en) * 1925-12-22 oe doveb
US1443461A (en) * 1920-05-01 1923-01-30 John S Donaldson Tool and tool retainer
US1525471A (en) * 1921-07-25 1925-02-10 Chicago Pneumatic Tool Co Coupling for percussive tools
US1859342A (en) * 1930-04-08 1932-05-24 Detachable Bit Corp Drill
FR707504A (fr) * 1930-12-13 1931-07-09 Forges Et Ateliers De Meudon S Emmanchement à baïonnette pour outils de marteaux pneumatiques
DE575906C (de) * 1931-03-13 1933-05-04 Fried Krupp Akt Ges Pressluftschlagwerkzeug
US2507585A (en) * 1946-07-26 1950-05-16 Bassinger Ross Percussion tool for wells
US2634951A (en) * 1949-09-01 1953-04-14 Snyder Oil Tool Corp Impact drill
US2889811A (en) * 1956-08-10 1959-06-09 Electro Chimie Metal Percussion tools
US3049109A (en) * 1959-09-28 1962-08-14 Schley Friedrich Free piston engines
DE2157259C3 (de) * 1971-11-18 1973-06-07 Tracto Technik Rammbohrgerät
FR2223143A1 (en) * 1973-03-30 1974-10-25 Favre Jacques Guide for tools or bits in pneumatic hammers - has conventional barrel extended as slide fit over flanged tool shaft
DE2340751C2 (de) * 1973-08-11 1974-09-26 Tracto-Technik Paul Schmidt, 5940 Lennestadt Steuervorrichtung für den Vor- und Rücklauf von Rammbohrgeräten
DE2356804A1 (de) * 1973-11-14 1975-05-28 Tracto Technik Rammbohrgeraet
US3885634A (en) * 1974-05-23 1975-05-27 Albert Adolfovich Goppen Pneumatic hammer
AT350002B (de) * 1977-12-31 1979-05-10 Inst Gornogo Dela Sibirskogo O Schlagartig wirkende drucklufteinrichtung zur bildung von schlauchfoermigen hohlraeumen im boden
DE3124524C2 (de) * 1981-06-23 1985-08-01 Gustav Dr.-Ing. 4300 Essen Jenne Rammvorrichtung für selbstgetriebene pneumatische Rammbohrgeräte
US4658913A (en) * 1982-06-03 1987-04-21 Yantsen Ivan A Hydropneumatic percussive tool
SE444401B (sv) * 1983-01-24 1986-04-14 Atlas Copco Ab Energiabsorberande inspenningsenhet for slagverktyg
US4632195A (en) * 1985-06-03 1986-12-30 Fansteel Inc. Roof drill system
JPH0830447B2 (ja) * 1986-06-28 1996-03-27 テイケイ気化器株式会社 気化器
DE3710162C1 (de) * 1987-03-27 1988-09-29 Helmuth Dipl-Ing Roemer Rammbohrgeraet mit beweglichem Meissel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992010637A3 (fr) * 1990-12-12 1992-12-10 Dalfsen Rotar Equipment B V Va Outil servant a faire des trous dans le sol
US5797705A (en) * 1990-12-12 1998-08-25 Willibald Kellner Method for manufacturing a tubular foundation in the ground

Also Published As

Publication number Publication date
EP0372225B1 (fr) 1997-01-29
JP2703374B2 (ja) 1998-01-26
EP0372225A3 (fr) 1992-05-27
DE3840923C2 (de) 1994-03-24
US5125462A (en) 1992-06-30
DE3840923A1 (de) 1990-06-07
JPH02200993A (ja) 1990-08-09
DE58909774D1 (de) 1997-03-13

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